GALAXY Trumpet Practice Straight Mute Black

Black trumpet mute made of cork and metal (for practice).
Purchased about 30 years ago for 5200 yen.
Used only a few times and has been stored ever since.
It is a long-term storage item, but there are no scratches, and as far as can be seen, there is no deterioration of the cork or internal rust.
Hoping someone can use it.

- Brand: GALAXY
- Material: Cork and metal
- Type: Trumpet practice mute
- Color: Black
- Shape: Conical

Thank you for looking.